[FABCJ-214] - Java chaincode gRPC server

remove unused import

Signed-off-by: Oleksandr Yamkovyi <oleksandr.yamkoviy@intellecteu.com>

Author: oyamkovyi

fabric-chaincode-shim/src/test/java/org/hyperledger/fabric/shim/ChaincodeBaseTest.java

@@ -33,7 +33,6 @@
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.contrib.java.lang.system.EnvironmentVariables;
-import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Assertions;
 import org.junit.rules.ExpectedException;
 import org.mockito.ArgumentCaptor;